Be more specific with elements to be cleared. See https://github.com/Automattic/_s/commit/dff92a0e9e0c6e101b4b189341f7aca9b3f12820#diff-da232d78aa810382f2dcdceae308ff8e
don't overspecify inputs. See https://github.com/Automattic/_s/commit/a0eec6c63b1b29d4d086b473e06be978f8848cfb#diff-da232d78aa810382f2dcdceae308ff8e
Move box-sizing border-box to reset and clean up one redundant case. See https://github.com/Automattic/_s/commit/73d72d6791998dfb1b295e105248ee611fe13ed9#diff-da232d78aa810382f2dcdceae308ff8e
Don't overspecify current menu item. See https://github.com/Automattic/_s/commit/9c6aff64f6081c744cc95180cfb310ce3ce110cf#diff-da232d78aa810382f2dcdceae308ff8e
Dead link in inline docs. See https://github.com/Automattic/_s/commit/44398c68a335832a8f7a1f575394e83a39d5b849
Remove an old line height workaround for forms in FF3/4. https://github.com/Automattic/_s/commit/eb948eac28858a80793fd92b64bb908039c9c056